houses flocked to the beaches amid warnings that high temperatures could lead to lives in the coming days.
Tracy Nicholls, chief executive of the College of Paramedics, said the “savage heat” predicted in the UK could have a detrimental effect on Britons.
But Deputy Prime Minister Dominic Raab said people need to be resilient enough to “enjoy the sun.”
Scorching temperatures are forecast for Monday, with Peterborough expected to reach 37C and Milton KeynesNorwich and Lincoln set to see 36C – while the temperature can go up to 40C in London on Tuesday.
Climate Attribution Scientist at the With Officedr. Nikos Christidis, said the 40C forecast is the result of climate change.
The forecaster issued an orange warning for most of England on Sunday. The alarm is in effect from Monday to Tuesday for the south of Scotland and Wales.
The first warning of red extreme heat in the UK was also issued Monday and Tuesday by the Met Office across much of England, from London to Manchester and York.
The UK Health Security Agency has also issued a level four heat warning, which is being described as a “national emergency”.
Ms Nicholls told Sky News’ Sophy Ridge On Sunday programme: “This is not like a lovely warm day where we can put on a little sunscreen, get out and enjoy a swim and a meal outside.
“This is some serious heat that could end up killing people because it’s so savage. We’re just not prepared for that kind of heat in this country.”
Her comments were made after Mr Raab said people should take precautions in anticipation of the record-breaking temperatures, but added they should be able to enjoy themselves.
“Of course we’re talking common sense and practical advice — stay hydrated, stay out of the sun during the hottest times, wear sunscreen — that sort of thing,” he told Sophy Ridge On Sunday.
“We should be enjoying the sun and actually we should be resilient enough through some of the pressure it will exert.”